Lamp-burner



UNITED STATES PATENT OFFICE.

JUDSON B. UNDERIVOOD, OF MERIDEN, ASSIGNOR TO THE OSBORN & CHEESMAN COMPANY, OF ANSONIA, CONNECTICUT.

LAMP-BURNER.

SPECIFICATION forming part of Letters Patent No. 320,726, dated June 23, ].885

Application filed May 14, 1884. (No model.)

To all whom it may concern.-

Be it known that I, J. B. UNDERWOOD, a citizen of the United States, residing at Meridcn, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Lamp-Burners, of which the following is a specification.

My invention relates to improvements in lamp-burners of the class employing the ordinary flanged base chimney.

As portions of my improved lamp-burner are well known in the prior art, I deem it unnecessary to here enter into a full and concise detail of such well-known parts, and thereforeI shall confine myself to a description of only such parts of the burner as are necessary to describe the scope and character of my invention.

My improved device is plainly illustrated in the accompanying sheet of drawings, in whicha Figure lis a side elevation of my improved burner with the cone elevated to the proper elevation to admit of the lighting of thelampwick, and Fig. 2 is a vertical sectional view of the same.

In the drawings, A designates the burnerbase,which may be of any construction, provided with a wick cube and wick-elevator.

B is the burner-cone of any construction in common use.

On the baseA are flat supporting-standards C and C, which are bent, as shown, and provided with eyes or perforations for the insertion and engagement of the burner-rods D and D, said rods being headed over at one end to prevent complete withdrawal. The supporting-standardsC and O are secured, preferably with solder, to the inner walls of the burnerbase, and extending upward therefrom. The rods D and D are fastened to theinside of the burnercone, as shown in the drawings, by rivets or otherwise, though for strength and durability I prefer to secure the rods by both riveting and soldering; but the mode of fastening in either case is immaterial so long as they are securely fastened. The different portions of the base A are provided with openings for the rods D and D to pass through when the base A and the cone B are brought into close contact, as is the case when the burner is lighted and ready for use. By reducing the size of the lower ends of the rods D and D, so as to give them a tapering form, as shown, the rods are permitted to spread apart slightly when the cone is elevated, as shown in Fig. 1. Though this spreading apart is very slight, it aids in the operation of my device, as is hereinafter explained; but it is not essential to my improvement that the rods should be reduced in size, as described, as I obtain a good result with a rod of uniform size through the frictional contact with the bent standards.

On the peiiphery 0f the burner-base A are the projections E, that engage with corresponding eyes in the burner-cone B when the burner is closed, which engagement helps to rigidly secure the two parts of the burner containing my improvement when it is in use.

I operate my device as follows: The chimney is placed upon theburner and held firmly in position, as is the case in ordinary burners of this class, by means of the set-screw F. I then with one hand firmly grasp the base A, and with the other hand raise the burner-cone B, and elevate it to such a height that the reduced ends of the rods D and D will engage with the perforations in the supporting-standards C and O, which engagement holds the cone B at a proper elevation to admit of the lighting of the wick. I next light the wick. Then press the burner-cone B gently down upon the base A,whereitis held in place by means of the projections E, with the corresponding eyes in the cone B, and the friction of the supportingstandards C and C and the rods D and D.

I am aware that prior patents show and describe lamps having vertically-sliding burnercones supported by rods which slide in tubes; also, that one of said patents shows these rods headed over at their lower ends. All of said prior art is hereby disclaimed. My improvement differs therefrom in the fact that by it I am enabled to construct the standards of flat sheet metal with simple perforations instead of forming them into a tube, thereby producing the device at less expense, and so as to occupy less space within the burner-base. Said construction also furnishes a better frictional contact of rods and standards than does the tubular construction herein disclaimed.

What I claim as my invention, and wish to secure by Letters Patent, is

1. In alamp-burner, the combination of the burner-base A, the supportingstandards 0 and G of the bent form, substantially as described, secured thereto, and having perforations near their upper ends, the burner-cone B, and the burner-rods D and D, carrying the cone B, and passing through the perforations at the upper ends of the said standards, substantially as described, and for the purpose specifled.

2. In a lamp-burner, the supporting-standards O and O, bent at their upper ends and provided with eyes or perforations for engageszonze ment with the rods D and D, substantially as described, and for the purpose specified.

3. In a lamp-burner, in combination with the base-plate A, provided with lugs E, the standards 0 G, secured within said base-plate and provided at their upper ends with a double bend and perforations, as shown, and the cone B, having secured fixedly thereto rods D D, adapted to fit movabl y in the bent perforated standards, said cone being formed with slots in its base rim to receive the lugs E when the cone is inits lowered position, all substantially as and for the objects specified.

J UDSON 13. UN DERVVOOD.

Witnesses:

LYMAN S. BUN, JOHN P. BARTLETT. 

